Cellular Exploration

About 30 trillion (3×1013)

About 300

HuBMAP (Human BioMolecular Atlas Program)

<p>1551</p> Signup and view all the answers

<p>31</p> Signup and view all the answers

<p>The distinctive features of plant cells include primary cell walls containing cellulose, hemicelluloses, and pectin, the presence of plastids capable of performing photosynthesis and storing starch, a large vacuole that regulates turgor pressure, the absence of flagella or centrioles (except in gametes), and a unique method of cell division involving the formation of a cell plate or phragmoplast that separates the new daughter cells.</p> Signup and view all the answers

<p>Plant cell walls are composed of cellulose, hemicelluloses, and pectin. In some cases, lignin or suberin may be secreted as secondary wall layers.</p> Signup and view all the answers

<p>Plant cell walls are composed of cellulose, hemicelluloses, and pectin, while cell walls of fungi are made of chitin, cell walls of bacteria are made of peptidoglycan, and cell walls of archaea are made of pseudopeptidoglycan.</p> Signup and view all the answers

<p>The large vacuole in plant cells regulates turgor pressure.</p> Signup and view all the answers

<p>Plant cells undergo cell division through the formation of a cell plate or phragmoplast that separates the new daughter cells.</p> Signup and view all the answers

<p>Cellulose, hemicelluloses, and pectin</p> Signup and view all the answers

<p>Chitin</p> Signup and view all the answers

<p>Peptidoglycan</p> Signup and view all the answers

<p>Pseudopeptidoglycan</p> Signup and view all the answers

<p>Lignin or suberin</p> Signup and view all the answers

<p>Primary cell walls containing cellulose, hemicelluloses, and pectin; presence of plastids; ability to perform photosynthesis and store starch; large vacuole; absence of flagella or centrioles except in gametes; unique method of cell division involving cell plate or phragmoplast formation.</p> Signup and view all the answers

<p>Cellulose, hemicelluloses, and pectin.</p> Signup and view all the answers

<p>Plant cell walls are composed of cellulose, hemicelluloses, and pectin, while fungi have cell walls made of chitin, bacteria have cell walls made of peptidoglycan, and archaea have cell walls made of pseudopeptidoglycan.</p> Signup and view all the answers

<p>In many cases, lignin or suberin can be secreted by the protoplast as secondary wall layers inside the primary cell wall.</p> Signup and view all the answers

<p>The large vacuole in plant cells regulates turgor pressure.</p> Signup and view all the answers